1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/e2gallerypro/e2upload/Backend/Assets/getid3/module.audio-video.swf.php	Mon Feb 22 08:02:39 2010 -0500
     1.3 @@ -0,0 +1,154 @@
     1.4 +<?php
     1.5 +// +----------------------------------------------------------------------+
     1.6 +// | PHP version 5                                                        |
     1.7 +// +----------------------------------------------------------------------+
     1.8 +// | Copyright (c) 2002-2006 James Heinrich, Allan Hansen                 |
     1.9 +// +----------------------------------------------------------------------+
    1.10 +// | This source file is subject to version 2 of the GPL license,         |
    1.11 +// | that is bundled with this package in the file license.txt and is     |
    1.12 +// | available through the world-wide-web at the following url:           |
    1.13 +// | http://www.gnu.org/copyleft/gpl.html                                 |
    1.14 +// +----------------------------------------------------------------------+
    1.15 +// | getID3() - http://getid3.sourceforge.net or http://www.getid3.org    |
    1.16 +// +----------------------------------------------------------------------+
    1.17 +// | Authors: James Heinrich <infoØgetid3*org>                            |
    1.18 +// |          Allan Hansen <ahØartemis*dk>                                |
    1.19 +// +----------------------------------------------------------------------+
    1.20 +// | module.audio-video.swf.php                                           |
    1.21 +// | module for analyzing Macromedia Shockwave Flash files.               |
    1.22 +// | dependencies: zlib support in PHP                                    |
    1.23 +// +----------------------------------------------------------------------+
    1.24 +//
    1.25 +// $Id: module.audio-video.swf.php,v 1.2 2006/11/02 10:48:00 ah Exp $
    1.26 +
    1.27 +        
    1.28 +        
    1.29 +class getid3_swf extends getid3_handler
    1.30 +{
    1.31 +
    1.32 +    public function Analyze() {
    1.33 +        
    1.34 +        $getid3 = $this->getid3;
    1.35 +        
    1.36 +        $getid3->info['fileformat']          = 'swf';
    1.37 +        $getid3->info['video']['dataformat'] = 'swf';
    1.38 +
    1.39 +        // http://www.openswf.org/spec/SWFfileformat.html
    1.40 +
    1.41 +        fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET);
    1.42 +
    1.43 +        $swf_file_data = fread($getid3->fp, $getid3->info['avdataend'] - $getid3->info['avdataoffset']); // 8 + 2 + 2 + max(9) bytes NOT including Frame_Size RECT data
    1.44 +
    1.45 +        $getid3->info['swf']['header']['signature']   = substr($swf_file_data, 0, 3);
    1.46 +        switch ($getid3->info['swf']['header']['signature']) {
    1.47 +        
    1.48 +            case 'FWS':
    1.49 +                $getid3->info['swf']['header']['compressed'] = false;
    1.50 +                break;
    1.51 +
    1.52 +            case 'CWS':
    1.53 +                $getid3->info['swf']['header']['compressed'] = true;
    1.54 +                break;
    1.55 +
    1.56 +            default:
    1.57 +                throw new getid3_exception('Expecting "FWS" or "CWS" at offset '.$getid3->info['avdataoffset'].', found "'.$getid3->info['swf']['header']['signature'].'"');
    1.58 +        }
    1.59 +        $getid3->info['swf']['header']['version'] = getid3_lib::LittleEndian2Int($swf_file_data{3});
    1.60 +        $getid3->info['swf']['header']['length']  = getid3_lib::LittleEndian2Int(substr($swf_file_data, 4, 4));
    1.61 +
    1.62 +        if (!function_exists('gzuncompress')) {
    1.63 +            throw new getid3_exception('getid3_swf requires --zlib support in PHP.');
    1.64 +        }
    1.65 +
    1.66 +        if ($getid3->info['swf']['header']['compressed']) {
    1.67 +
    1.68 +            if ($uncompressed_file_data = @gzuncompress(substr($swf_file_data, 8))) {
    1.69 +                $swf_file_data = substr($swf_file_data, 0, 8).$uncompressed_file_data;
    1.70 +
    1.71 +            } else {
    1.72 +                throw new getid3_exception('Error decompressing compressed SWF data');
    1.73 +            }
    1.74 +
    1.75 +        }
    1.76 +
    1.77 +        $frame_size_bits_per_value = (ord(substr($swf_file_data, 8, 1)) & 0xF8) >> 3;
    1.78 +        $frame_size_data_length    = ceil((5 + (4 * $frame_size_bits_per_value)) / 8);
    1.79 +        $frame_size_data_string    = str_pad(decbin(ord($swf_file_data[8]) & 0x07), 3, '0', STR_PAD_LEFT);
    1.80 +        
    1.81 +        for ($i = 1; $i < $frame_size_data_length; $i++) {
    1.82 +            $frame_size_data_string .= str_pad(decbin(ord(substr($swf_file_data, 8 + $i, 1))), 8, '0', STR_PAD_LEFT);
    1.83 +        }
    1.84 +        
    1.85 +        list($x1, $x2, $y1, $y2) = explode("\n", wordwrap($frame_size_data_string, $frame_size_bits_per_value, "\n", 1));
    1.86 +        $getid3->info['swf']['header']['frame_width']  = bindec($x2);
    1.87 +        $getid3->info['swf']['header']['frame_height'] = bindec($y2);
    1.88 +
    1.89 +        // http://www-lehre.informatik.uni-osnabrueck.de/~fbstark/diplom/docs/swf/Flash_Uncovered.htm
    1.90 +        // Next in the header is the frame rate, which is kind of weird.
    1.91 +        // It is supposed to be stored as a 16bit integer, but the first byte
    1.92 +        // (or last depending on how you look at it) is completely ignored.
    1.93 +        // Example: 0x000C  ->  0x0C  ->  12     So the frame rate is 12 fps.
    1.94 +
    1.95 +        // Byte at (8 + $frame_size_data_length) is always zero and ignored
    1.96 +        $getid3->info['swf']['header']['frame_rate']  = getid3_lib::LittleEndian2Int($swf_file_data[9 + $frame_size_data_length]);
    1.97 +        $getid3->info['swf']['header']['frame_count'] = getid3_lib::LittleEndian2Int(substr($swf_file_data, 10 + $frame_size_data_length, 2));
    1.98 +
    1.99 +        $getid3->info['video']['frame_rate']         = $getid3->info['swf']['header']['frame_rate'];
   1.100 +        $getid3->info['video']['resolution_x']       = intval(round($getid3->info['swf']['header']['frame_width']  / 20));
   1.101 +        $getid3->info['video']['resolution_y']       = intval(round($getid3->info['swf']['header']['frame_height'] / 20));
   1.102 +        $getid3->info['video']['pixel_aspect_ratio'] = (float)1;
   1.103 +
   1.104 +        if (($getid3->info['swf']['header']['frame_count'] > 0) && ($getid3->info['swf']['header']['frame_rate'] > 0)) {
   1.105 +            $getid3->info['playtime_seconds'] = $getid3->info['swf']['header']['frame_count'] / $getid3->info['swf']['header']['frame_rate'];
   1.106 +        }
   1.107 +
   1.108 +
   1.109 +        // SWF tags
   1.110 +
   1.111 +        $current_offset = 12 + $frame_size_data_length;
   1.112 +        $swf_data_length = strlen($swf_file_data);
   1.113 +
   1.114 +        while ($current_offset < $swf_data_length) {
   1.115 +
   1.116 +            $tag_ID_tag_length = getid3_lib::LittleEndian2Int(substr($swf_file_data, $current_offset, 2));
   1.117 +            $tag_ID     = ($tag_ID_tag_length & 0xFFFC) >> 6;
   1.118 +            $tag_length = ($tag_ID_tag_length & 0x003F);
   1.119 +            $current_offset += 2;
   1.120 +            if ($tag_length == 0x3F) {
   1.121 +                $tag_length = getid3_lib::LittleEndian2Int(substr($swf_file_data, $current_offset, 4));
   1.122 +                $current_offset += 4;
   1.123 +            }
   1.124 +
   1.125 +            unset($tag_data);
   1.126 +            $tag_data['offset'] = $current_offset;
   1.127 +            $tag_data['size']   = $tag_length;
   1.128 +            $tag_data['id']     = $tag_ID;
   1.129 +            $tag_data['data']   = substr($swf_file_data, $current_offset, $tag_length);
   1.130 +            switch ($tag_ID) {
   1.131 +                
   1.132 +                case 0: // end of movie
   1.133 +                    break 2;
   1.134 +
   1.135 +                case 9: // Set background color
   1.136 +                    $getid3->info['swf']['bgcolor'] = strtoupper(str_pad(dechex(getid3_lib::BigEndian2Int($tag_data['data'])), 6, '0', STR_PAD_LEFT));
   1.137 +                    break;
   1.138 +
   1.139 +                default:
   1.140 +                    /*
   1.141 +                    if ($ReturnAllTagData) {
   1.142 +                        $getid3->info['swf']['tags'][] = $tag_data;
   1.143 +                    }
   1.144 +                    */
   1.145 +                    break;
   1.146 +            }
   1.147 +
   1.148 +            $current_offset += $tag_length;
   1.149 +        }
   1.150 +
   1.151 +        return true;
   1.152 +    }
   1.153 +
   1.154 +}
   1.155 +
   1.156 +
   1.157 +?>
   1.158 \ No newline at end of file